It is not a problem with my computer. Any computer hooked up to my projector will produce an image that is bigger than my Promethean board. There must be a control setting on the projector or with the remote that can make the image smaller. I tried zooming out and it helped a little.
If this is also a Promethean projector, we would recommend to check what the image looks like with no source connected to the computer. Any changes that you have made such as the zooming will need to be reset.
If this is perfectly aligned within the ActivBoard’s surface, connect your computer and you will need to amend the screen resolution to a correct aspect ratio.
Please refer to article 10418 on http://www.PrometheanKB.com for further information regarding screen resolutions and aspect ratio’s.